Shortly after the vote, MPs from right-wing parties said they had already filed a legal challenge with the council.

It will have a month to make a ruling and opponents are hoping that in the meantime they can build up enough pressure to force Hollande, who has been steadfast in supporting the bill, to back down from signing it.

Tens of thousands have taken to the streets in recent months to oppose the bill, in demonstrations that have occasionally spilled over into violence.